KR970001567A - Rough steel manufacturing method for binding steel coil products with excellent toughness - Google Patents

Rough steel manufacturing method for binding steel coil products with excellent toughness Download PDF

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Publication number
KR970001567A
KR970001567A KR1019950017898A KR19950017898A KR970001567A KR 970001567 A KR970001567 A KR 970001567A KR 1019950017898 A KR1019950017898 A KR 1019950017898A KR 19950017898 A KR19950017898 A KR 19950017898A KR 970001567 A KR970001567 A KR 970001567A
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KR
South Korea
Prior art keywords
steel
manufacturing
temperature range
binding
present
Prior art date
Application number
KR1019950017898A
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Korean (ko)
Other versions
KR0151989B1 (en
Inventor
김흥섭
정우창
동계수
Original Assignee
김종진
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
권오훈
삼점강업 주식회사
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Application filed by 김종진, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소, 권오훈, 삼점강업 주식회사 filed Critical 김종진
Priority to KR1019950017898A priority Critical patent/KR0151989B1/en
Publication of KR970001567A publication Critical patent/KR970001567A/en
Application granted granted Critical
Publication of KR0151989B1 publication Critical patent/KR0151989B1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/001—Heat treatment of ferrous alloys containing Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

본 발명은 청강코일 제품의 결속용으로 사용되는 대강의 제조방법에 관한 것으로, 강의 성분을 조정하여 고탄소 고망간강을 사용하지 않고 제조공정을 제어하여 블루잉전에 유도가열로에 의한 오스템퍼링 공정을 행하지 않으므로써, 별개의 설비투자없이 낮은 제조원가로 인장강도 90kgf/㎟ 이상, 연신율 8.0% 이상의 인성이 우수한 철강코일 제품의 결속용 대강을 제조하는 방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method of manufacturing a rough steel used for binding a steel coil product, by adjusting the composition of the steel to control the manufacturing process without using high-carbon high-manganese steel to perform an ostempering process by an induction furnace before bluing. It is an object of the present invention to provide a method for manufacturing a steel sheet for binding steel coil products having excellent toughness of 90 kgf / mm 2 or more and elongation of 8.0% or more at low manufacturing cost without additional equipment investment.

상기한 목적을 달성하기 위한 본 발명은 중량 %로 C : 0.17~0.23%, Mn : 0.7~1.2%, P : 0.04%이하, S : 0.05% 이하 가용성 Al : 0.02~0.08%, N : 0.006% 이하, Ni : 0.10~0.30%, 나머지 : Fe 및 불가피하게 함유되는 불순물로 조성되는 슬라브를 1200~1250℃ 온도범위에서 균질화 처리한후, 2.0~2.3mm의 두께 범위까지 Ar3 온도이상인 840~920℃ 온도범위에서 마무리 열간압연하고, 450~550℃ 온도범위에서 권취한 다음, 45~65%의 압하율로 최종두께까지 냉간압연, 그리고 430~470℃ 온도범위에서 블루잉 처리하여 인성이 우수한 철강코일 제품의 결속용 대강을 제조하는 방법을 그 요지로 한다.The present invention for achieving the above object by weight% C: 0.17 ~ 0.23%, Mn: 0.7 ~ 1.2%, P: 0.04% or less, S: 0.05% or less Soluble Al: 0.02 ~ 0.08%, N: 0.006% Below, Ni: 0.10 to 0.30%, the remainder: after homogenizing the slab composed of Fe and inevitable impurities contained in the 1200 ~ 1250 ℃ temperature range, 840 ~ 920 ℃ above the Ar3 temperature to a thickness range of 2.0 ~ 2.3mm Hot rolled finish in temperature range, coiled in 450 ~ 550 ℃ temperature range, cold rolled to final thickness with 45 ~ 65% reduction rate, and bluing in 430 ~ 470 ℃ temperature range The main point is a method of manufacturing a coarse steel for binding products.

Description

인성이 우수한 철강코일 제품의 결속용 대강 제조방법Rough steel manufacturing method for binding steel coil products with excellent toughness

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 부합되는 발명강과 본 발명을 만족하지 못하는 비교강을 블루잉처리한 후 인장시험하여 얻은 인장강도-연신율을 비교한 그래프.1 is a graph comparing tensile strength-elongation obtained by tensile test after bluing an inventive steel according to the present invention and a comparative steel that does not satisfy the present invention.

Claims (1)

중량%로 C : 0.17~0.23%, Mn : 0.7~1.2%, P : 0.04%이하, S : 0.05% 이하 가용성 Al : 0.02~0.08%, N :0.006% 이하, Ni : 0.10~0.30%, 나머지 : Fe 및 불가피하게 함유되는 불순물로 조성되는 슬라브를 1200~1250℃ 온도범위에서 균질화 처리한후, 2.0~2.3mm의 두께 범위까지 Ar3온도이상인 840~920℃ 온도범위에서 마무리 열간압연하고, 450~550℃ 온도범위에서 권취한 다음, 45~65%의 압하율로 최종두께까지 냉간압연, 그리고 430~470℃ 온도 범위에서 블루잉하는 것을 특징으로 하는 인성이 우수한 철강코일 제품의 결속용 대강 제조방법.By weight% C: 0.17 ~ 0.23%, Mn: 0.7 ~ 1.2%, P: 0.04% or less, S: 0.05% or less Soluble Al: 0.02 ~ 0.08%, N: 0.006% or less, Ni: 0.10 ~ 0.30%, rest : After homogenizing the slab composed of Fe and inevitable impurities at 1200 ~ 1250 ℃ temperature range, finish hot rolling at 840 ~ 920 ℃ temperature range over Ar 3 temperature to thickness range of 2.0 ~ 2.3mm, 450 Winding at a temperature range of 550 ° C, followed by cold rolling to a final thickness of 45% to 65%, and blueing at a temperature range of 430 ° C to 470 ° C. Way. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950017898A 1995-06-28 1995-06-28 Method for manufacturing tying steels for high-tenacity iron coil KR0151989B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950017898A KR0151989B1 (en) 1995-06-28 1995-06-28 Method for manufacturing tying steels for high-tenacity iron coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950017898A KR0151989B1 (en) 1995-06-28 1995-06-28 Method for manufacturing tying steels for high-tenacity iron coil

Publications (2)

Publication Number Publication Date
KR970001567A true KR970001567A (en) 1997-01-24
KR0151989B1 KR0151989B1 (en) 1998-11-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950017898A KR0151989B1 (en) 1995-06-28 1995-06-28 Method for manufacturing tying steels for high-tenacity iron coil

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431609B1 (en) * 1999-12-21 2004-05-17 주식회사 포스코 Manufacturing of high toughness steel band for coil banding

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544539B1 (en) * 2001-12-21 2006-01-24 주식회사 포스코 High Strength Cold-Rolled Steel Sheet with Good Toughness for Coil Packaging Band and A Method for Manufacturing Thereof
KR100614937B1 (en) * 2002-12-26 2006-08-25 (주)씨제이이엔지 Heat treatment method for austempering
KR100851805B1 (en) * 2006-12-27 2008-08-13 주식회사 포스코 Manufacturing method of high carbon steel sheet superior in impact toughness

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431609B1 (en) * 1999-12-21 2004-05-17 주식회사 포스코 Manufacturing of high toughness steel band for coil banding

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